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Title:
CONTROLLER OF ELECTRIC VEHICLE
Document Type and Number:
Japanese Patent JP2007202384
Kind Code:
A
Abstract:

To boost a voltage from a DC power supply by using a voltage boosting converter, generate a system voltage on a power supply line, and enhance a voltage stabilizing effect on the power supply line of a system for driving an AC motor supplied with the system voltage through an inverter.

An input voltage of the AC motor 14 is manipulated, and a fluctuation in the system voltage is suppressed so as to reduce a deviation ΔVs between a target value Vs* and a detection value Vsf of the system voltage. If a rotational speed N2 of the AC motor 14 is higher than a predetermined value or a torque instruction value T2* is higher than a predetermined value, the quantity Pm of input power manipulation required for stabilizing the system voltage is surely achieved by delaying a current vector and manipulating input power. If the rotational speed N2 of the AC motor 14 is the predetermined value or less and the torque instruction value T2* is the predetermined value or less, a fluctuation in a torque is reduced by advancing the current vector and manipulating the input power.

COPYRIGHT: (C)2007,JPO&INPIT


Inventors:
EGAMI TSUNEYUKI
KAWAKAMI KEIICHI
Application Number:
JP2006308137A
Publication Date:
August 09, 2007
Filing Date:
November 14, 2006
Export Citation:
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Assignee:
DENSO CORP
International Classes:
B60K6/445; B60L9/18; B60L11/14; B60L50/16; B60W10/08; B60W20/00; H02P5/50; H02P21/00; H02P27/04
Domestic Patent References:
JP2004274945A2004-09-30
JP2003259505A2003-09-12
Attorney, Agent or Firm:
加古 宗男